I discovered a good site describing how to find tactics in your games. The site itself isn’t much; it could have been a whole lot better if the author had continued to expand it, but he does give a good list of motifs as “signposts” to look for in your games. Spot these “signposts” and you know there’s probably something in the position. Discovering Tactical Shots in Your Games
He gives links to examples of each motif HERE.
Looking for motifs is a lot better than just "trying out" random moves to see if they work. It also keeps you from wasting a lot of time going on a wild goose chase if there are no tactics in the position.